/Engine/Plugins/FX/Niagara/Source/NiagaraEditor/Public/NiagaraScriptSource.h
virtual void CleanUpOldAndInitializeNewRapidIterationParameters ( const [FVersionedNiagaraEmitter](API\Plugins\Niagara\FVersionedNiagaraEmitter) & Emitter, [ENiagaraScriptUsage](API\Plugins\Niagara\ENiagaraScriptUsage) ScriptUsage, [FGuid](API\Runtime\Core\Misc\FGuid) ScriptUsageId, [FNiagaraParameterStore](API\Plugins\Niagara\FNiagaraParameterStore) & RapidIterationParameters ) const